Graphophone.



' A. E. PARNALL.

GRAPHOPHONE.

APPLICATION FILED MAR. 15, 1913. 1,1 30,, 37, Patented Mar. 9, 1915.

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A. E. PARNALL.

GRAPHOPHONE. APPLICATION FILED MAR.15, 191s.

Patented Mar. 9, 1915.

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GRAPHOPHONE.

APPLICATION FILED MAR. 15, 1913.

Patented Mar. 9, 1915.

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UNITED s A'rEs PATENT onrron ARCHIE E. PARNALL, OF GHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO FRANK W. WILLIAMS, OF CHICAGO, ILLINOIS.

GRAPHOPHOIVE.

Specification of Letters Patent.

Patented Mar. 9, .1915.

Application meamareh 15, 1am. Serial mam.

To all whom it may concern:

Be it known that I, ARCHIE .E. PARNALL, a citizen :of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Graphophones, of which the following is a specification, reference being bad therein to the accompanying drawing.

My invention relates to graphophones and consists in the matters hereinafter described and then pointed out in the appended claims.

In the accompanying drawings illustrating a practical embodiment of the several features of my inventionFigure 1 is a plan view :of the machine; Fig. 2 is a sectional view on the line 22 of Fig. 1 looking in the direction'of its arrows; Fig. 3 is a detail view of the returning-worm and the needlearm; Fig. 4 is a View in side elevation taken at the motor side of the machine; Fig. 5 is a sectional View on the line 5-5 of Fig. 1 looking in the direction of its arrows; Fig. 6 is a front view of parts of Fig. 5 taken at the right hand; Fig. 7 is a view in side elevation on the side opposite to Fig. 4 and with the parts in position for returning the needle-arm to its initial position on the rec- 0rd; Fig. 8 is a view in rear elevation taken at the left hand of Fig. 1; Fig. 9 is a view in rear elevation of parts of the sound-box, and Fig. 10 is a detail view showing the means for providing a universal joint fo the needle-arm on the box.

The several parts are mounted upon a suitable base 14 and power is provided for operating the parts by a suitable motor which in the present embodiment is in the form of a spring-barrel 15 mounted in the frame 16 and by which rotation is given to the spur wheel 17 which forms the main drive wheel. The spring-barrel and its parts are of the usual construction and operation, the spring (not shown) being wound up in the usual way by applying a suitable key (not shown) to the squared end 18 of its shaft and communicating motion to the wheel 17. A short shaft 19 suitably journaled in the uprights 16 carries at one end a small pinion 20 (Fig. 4) meshing with the drive wheel 17 and at its other end a large pinion 21 (Figs. 1 and 2) driving a small pinion 22 on a shaft 23 whlch 1n turncarries'a large pinion 24 driving a small pinion 25 on a second shaft 26 which in its turn carries a large pinion 27 driving a small pinion 28 on athird shaft .29, the shafts 23 and 26be1ng suitably mounted in the uprights 16 and 30 and the shaft 29 in the brackets 31. The shaft 26. has a pulley 32 communicating motion by belt33 toa' pulley 34 on the shaft 35 mounted in the upright 30 and actuating the record carrier or mandrel 36 upon which. records 37 of ordlnary mounted.

When the spring of the barrel I5 is wound up it acts to revolve the wheel 17 and" the connected train of gears, and in order to control the rotation ref the drive wheelLI provide a brake-pad tostop the machine and a speed-regulating pad-to regulate the speed of the mach1ne,both pads operating on the flange 38 of the usual speed governor 39. The disk 38 revolves between a stationary friction pad 40'and a movable friction pad 41 carried by the free-end of the swinging arm 42 mounted on a rock-shaft 43 journaled 1n bearings 44 on the frame, the pad 41 being pressed against the disk 38 by an expansion spring 45 reacting between the arm 42 and the frame. The speed of the governor and of the train of gears may be regulated by adjusting the pad 40 toward or away from the disk 38 by mounting it'in an adjustable frame 45 guided in bearings 1n the framework 16 and set in any desired position by a set screw 46. The movable friction pad 41 under the force of its spring acts as a brake to stop the machine when the rock-shaftis allowed to turn in proper direction for the pad to engage the disk by the latch and trip-disk now about to be described.

The rock shaft 43 is provided with a lateral arm 47 engaged by the starting-key 48 which may extend up through any suitable casing in which the machine may be inclosed, such as shown in dotted lines 80 in Fig. 4. The rock-shaft 43 is also provided with a latch 49-actuated by spring 45 to engage a gate or slot 50 in a stop-disk 51 which trips the brake-pad 41 and is mounted near the forward end of a counter shaft 52 rotatably mounted in bearings 53 on the upright 30 and carrying a worm-wheel 54 driven by a worm-gear 55 on. the shaft 56 journaled in hearings in the frame and provided with a pinion 57 "meshing with the drive-wheel 17. Wlaen'the brake-.pad41'is 110 withdrawn from engagement with the disk 38 by rocking the shaft 43, the shaft 52 is free to make a revolution under the action of the spring-barrel, the periphery of the disk 51 holdin the latch 49 down and so the pad 41 out of contact with the brake flange or disk 38, and when the latch again enters its slot or gate when the shaft has completed a revolution it trips the rock-shaft which then is free to turn under the force of the spring 45 to engage the pad 41 with the governor-flange 0r isk to automaticalldvlskstop the machine. The gate in the stop- 51 is so related to the record that it allows the brake to stop the action of the machine when the needle completes its movement over the record and is returned to its initial position.

The rock-shaft 43, its arm 47 and latch 49 constitute a-rock-frame by which the operation of the machine isjcontrolled, its starting being effected by the spring-motor when this frame is moved to place its sprmg 45 under compression and its movement being stopped by the brake-pad 41 acting on the flange 38 when the latchentersthe 50 of the trip-disk 51 which acts as a timingdisk to trip the brake when the stylus or needle has traveled a predetermined distance over the record. 5

I provide means for automatically returning the needle to its starting point and in the form shown this function is controlled by a disk or wheel 58 mounted on the front end of the shaft 52 and provided with one 35 or more peripheral recesses or notches 59. A frame 60 is yieldingly hung at its rear end upon the shaft 23 and carries at its forward end a lug or projection 61 in the pathof the disk 58 and held against it by the retractile spring 62 secured thereto and to the frame work. The swinging frame carries a crossshaft 63 provided with a pinion'64 meshing with a pinion 65 on the shaft 23 so that the former is rotated in any position of the frame. The shaft 63 is extended beyond the frame along side the record-carrier as shown in Fig. 1 and is provided with a reversing worm 66 below the needle-arm 67 which is provided with a downwardly projecting leg 68 adapted to run in the worm when the frame 60 is swung to its upward position by the spring 62. When the projection'61 rests in the notch 59 and the latch 49 is in its gate 50 in the position shown in Fig. 6, the brake-pad 41 holds the parts against movement with the needle-arm in the position shown in Fig. 1 so that the needle or stylus cotiperates with the record, and when the key 47 presses the latch out of its gate and-releases the brake the record rotates and the pinion 64 and the disks 51 and 58 revolve, the latter in the direction of of the arrow in Fig. 6. The initial movement .of the disk 58 causes the beveled orinclined end of its recess 59 to cam the frame downwardly and so swing the worm 66 out of the path of the leg 68 of the needle-arm and the latter is free to travel across the record. When'the disk 58 has .nearly completed a revolution the lug 61 is 70 forced by spring 62 into the abrupt end of the recess or notch 59 and the frame 60 rises so that the worm 66 engages with the leg 68. The depth of the notch and the relation of the parts is such that the upward motion of the frame and worm is sufiicient to raise the needle-arm so that the needle is lifted from contact with the record as shown in Fig. 7, and the arm being mounted so as to swing freely back and forth, preferably by means hereinafter described, the rotation of the reversely threaded worm driven by its drive pinions 64and 65 returns the needlearnrto its initial position to engage the beginn ng of the record as in Fig. 1. The worm 1s of sufiicient length to engage the leg at any point of its travel and return it to engage the first line of the record, and the edge of the notch 59 between its ends is concentric with the periphery of the disk to provlde a dead space or dwell as shown in Fig. 6 so that the frame will be held elevated long enough to allow the worm to return the armto its initial position where it is stopped by the flange 69 on the shaft 63 engaging the leg 68, the lug 61 then reaching its original position shown in Fig. 6. The notch 59 and gate 50 are so arranged and related with the entrance end of the former in advance of the latter that the latch 49 drops into the latter when the lug 61 reaches the end of its dwell in the notch as shown in Fig. 6, thereby tripping the brake-pad for automatically stopping the machine.

The needle or stylus may be picked up and returned to its initial position at any point of its travel on the record, and the disk 58 may be provided with a plurality of recesses or notches to enable the needle-re: turning mechanism to act sotha't the record may be repeated during the revolution of the disk. For example, with a record of given width, said one inch, the disk 58 may be of suflicient size so that the travel of the needle or stylus across the record will be coincident with the travel of the peripheral portion of'the disk over the lug 61 in order'that when the needle has reached the end of the record the lug will enter the notch. and the needle will be automatically returned to place as above described; or with a record of less width, say one-half inch, the disk may be provided with two openings orrecesses so that for a single revolution of the disk the needle 'will be twice automatically returned and replaced at the beginnmg of the record in order to repeat the matter on the record. It is of course obvious that by changing the relations of the disk notches or recesses to cor- 75. The supporting frame of the sound-box 5 is utilized as the support for the swinging needle-arm 67 which may be swung verticall) and horizontally by pivotally mounting it upon. a plate or disk 76 which is pivotally mounted on the open side of the box. The plate is pivoted by means of two opposite lateral or side ears 77 upon the frame of the sound box and the arm is pivoted'in theupper and lower cars 78 of the plate, so that it is connected to the box by v a universal joint and may swing freely horizontally or from side to side on its pivots 78 on the plate as well as vertically or up and down with the plate upon its pivots 1-1. The upright 71 is provided with a spring 79 which bears upon the lower edge of the plate and so places it under tension to hold the needle on the record but yields to allow the needle to be raised to clear the record when the re turn worm acts. The spring takes the place of the usual weight to hold the needle on the recordbut unlike the weight it acts to tenside, and it also allows the needle to'be automatically returned to its initial position as it does not weight it down or retard its free j movement across the record. 7

In practice I may include the working i I 1 parts in-a'case' indicated by the dotted lines 80 in'Fig. 4 which is provided with suitable openings for the horn 81 and for the starting key 48, and as the latter may be removed by having a screw-thread connection with the arm 47 as shown in Fig. 2 the ma-'. chine may be set in any position without terfering with its operation.

I claim 1 1. In a device of the class described, a record carrier, a needle-arm, a motor to actuate the carrier, a notched disk rotated by the motor, a swinging frame cotiperating' with the disk, a reversing worm carried by 2. Ina device of the class described, a

record carrier, a needle-arm, a motor to actuate the carrier, a notched dlSk rotated byrthe motor, a vertically swinging frame coiiperating'with' the disk, a reversing worm carried by the frame and driven from the motor, and a projection on the arm to travel in the worm when the frame rises in notch of the disk.

3. In a device of the class described, a-

record carrier, a needle-arm, a motor to ac-,'

tuate the carrier, a notched disk rotated by the motor, a vertically swinging frame having a lug toenter the notch in the disk, a spring to move the lug into the notch, a reversing worm carried by the frame and driven= from the motor, and means to connect the worm and needle-arm when the lug entersthe notched portion of the disk.

4. In a device of the class described, a record carrier, a needle-arm, a motor to actuate the carrier, a notched disk rotated by the motor, a vertically swinging frame having a lug to-enter the notch in the-disk, a

spring to move the lug into the notch, a-

pinion driven by the motor, a reversing worm carried by the frame and havinga pinion actuated by the first pinion, and a projection on the needle-arm to engage the:- worm to raise .the needle-arm andretract it to its initial position. I

5. In a device of the class described, a

sound-box having a diaphragm, a; platehaving pivotal connection to the box to swing vertically thereon, a needle-arm hava pivotal connection to the plate to in swing horizontally thereon, a spring acting on the plate to hold the needle-arm in op erati've relation with the record, a rotating reversing worm, and means to elevate the worm into engagement with means or the needle-arm to raise the latter from the rec'- ord against the tension of the spring and return it-to its initial position.

6. In. a device of the class described, a swinging needlearm, a rotating disk having a notch, a swinging frame co6perating with the disk, a reversingfworm carried by the frame, means to connect the worm and needle-arm w'hen the frame enters the match of the disk, a brake-mechanism including a spring-actuated latch, and means to auto matically trip the latch when the worm has retracted the needle-arm.

7. In a device of the class described, a swmgmg needle-arm, a rotating disk having a gate, a second rotating disk having a notch in advance of the gate, a spring-actuated frame to enter the notch of the second disk,

a reversing worm carried by the frame,'

means to connect the worm and needle-arm when the frame enters its notch, and a brake-latch to engage the gate when the disk has completed a revolution.

8. In a device of the class described, a swinging needle-arm, a rotating flange, a brake for the flange, a rotating shaft, a disk on the shaft having a gate, a second disk on the shaft having a notch, a spring-actuated frame carrying a reversing worm andentering the notch of the second disk, means to connect the wormcand' arm when theframe enters the notch, and means tripped by the gate of the first'disk to permit the.

brake to act when-the frame is at the end of the-notch. 9. In a device of the class descrlbed, a

swinging needle-arm, a rotating flange, a' brake for the flange, a sprlng-presse'drockframe on which the brake is carried, a rore tract. the needle-arm before the brakeframe is tripped by its disk.

10. In a device of the "class described, a

' swinging needle-arm, a. rotating flange, a

brake for the flange, aspring-pressed rockframe on which the brake is carried, a rotating trip-disk,a latch'on theframe trlpped by the disk to release the frame to allow the brake to act on the flange, a second rotating disk,.a reversing. worm, and means cooperating with said, second" disk to engage the worm and needle-arm to retract the' latter before the brake-frame is I'tripped by'its v centric with the periphery of the dlsk, a

disk; v

11. In a device of thejclass described, a swinging needle-arm, a rotating flange, an

adjustable friction pad to engage the flange,

a movable friction padto engage the flange, a spring-actuated r0ck-shaft on which the second 'pad is carried, an arm on the shaft, a key to actuate the arm to rock the shaft against the action of its spring to release the flange from the action of the movable pad, a rotating trip-disk, a latch on the shaft tripped by the disk to release the shaft to allow the second pad to brake the flange, and means i to automatically retract the stylus-arm before the latch is tripped by the disk.

12. In a device of the class described,'a swinging needle-arm, a rotatable notched disk, a swinging frame cooperating with the disk, areversing-worm carried by the frame, means to connect the worm. and needle-arm when the frame co-acts with the notched portion ofthe disk, a rotating stop-disk having a-gate, and a brake latch to engage the gate when the stop-disk has completed its rotation, the gate being offset from the notch to allow the worm to return the needle arm to its initial position before the latch engages the gate.

a 13. In .afidevice ofithe class described, a swinging needle-arm, a rotatable notched disk, a swinging frame cooperating with the disk, a reversing worm carried by the frame, means to connect the worm and'needle-arm when the frame co-acts with the notched portion of the disk, a rotating stop-disk having a gate, and a brake-latch to engage the gate when the stop-disk has completed a revolution, the notch of the first disk having .a dwell or idle portion of suflicientlength to allow the worm to return the needle arm to its initial position before the latch engages the gate of the stop-disk.

14. In a device of the class described, a swinging needle-arm, a rotatable disk having an elongated notchwhose face is convertically swingingspring-actuated frame having a lug to enter the notch of the disk, a reversing worm carried by the frame,

when the lug of the frame is in the notch of the disk, a rotating stop-disk having a gate,

.means to connect the worm and needle-arm and a spring-actuated brake-latch to engage the gate when the stop-disk has completed a revolution, the relation of the gate and notch being such that the latch enters the gate after the worm has retracted the needle-arm to its initial position.

In testimony whereof'I affix my signaturein presence of two witnesses.

' ARCHIE E. PARNALL. -Witnesses: i

EDITH WILcox, J. McRoBER'rs. 

